Dust-guard for car-axle boxes.



(NoModeL) PatentadDec. 5, I899. N. H. DAVIS. DUST GUARD FOR cAn AXLE BOXES.

(Application filed July 15, 1899.)

TA'rns Ilnrrnn DUST-"GUARD FOR CAR-AXLEBOXES.

SPECIFICATION forming part of Letters Patent No. 638,500, dated December 5, 1899..

Application filed July 15. 1899.

T 60% whom it may concern.-

Be it known that I, NATHAN I-I. DAVIS, a citizen of the United States of America, residing in the cit-y and county of Philadelphia, in the State of Pennsylvania, have invented a certain new and useful Improvement in Dust- Guards for Oar-Axle Boxes, of which the following is a true and exact description, reference being had to the accompanying drawings, which form a part thereof.

My invention relates to dust-guards for caraxle boxes, and especially to car-axle boxes used in connection with certain forms of trucks and in which it isvimpracticable to have laterally-projecting flanges on the rear of the box.

In another application for Letters Patent filed by me July 15, 1899, Serial No. 723,882, I have shown and described a dust-guard having the general features of my present invention except that'it is connected to the box through lateral ear-like flanges at the rear of g the box, while my present invention relates to a means of securing the dust-guard to the box without such lateral ears or projections.

The nature of myimprovernents will be best understood as described in connection with the drawings, in which they are illustrated, and in which- Figure 1 is a central longitudinal sectional elevation of a car-axle box provided with my improved dust-guard, the axle and a portion of the wheel being also indicated. Fig. 2 is a plan view of the axle-box and dust-guard, and Fig. 3 is a partial rear elevation.

A indicates the axle-box, having an opening A for the packing material, with a horn A to which the lid is connected in the usual way. It is also shown as provided with laterally-extending lugs A A 850., pierced with bolt-holes a a through which the bolts which secure it to the truck are passed.

A indicates the opening for the axle at the rear of the box; A a narrow rearwardly-extending flange or rim around the opening A, formed with a plane face, as indicated at a A and A are ears or projections extending from the top and bottom of the box A. I prefer to form the upwardly-extending car A with a groove, as indicated at a in its rear face, and such a groove, as indicated at 0. may also be formed in the downwardly-pro- Serial No. 728,833. (No model.)

jecting ear A though it is not necessary in both ears, nor, indeed, is more than a stop-lug to counteract rotation in both direct-ions necessary in either.

B indicates the axle; O, a car-wheel attached to it.

Dis the dust-guard, built of cast metal, having a circular opening ol formed through it, which fits nicely on the axle, as indicated.

d is a rearwardly-extending annular flange with a plane face surrounding the opening d. The plate D is preferably of oblong form, with the opening 01 nearer to the top than to the bottom of the oblong, so that the portion D extending below is of greater length than the portion D extending above. The inner face (1 of the plate is smooth and plane, so as to fit closely against the face a of the rim A In all of the particulars above described my dust-guard does not differ from the one forming the subject-matter of my other application; but while in my other application. I secure springs to the sides of the other dustguard plate, in my present construction. I form on the top and bottom of the plate lugs (indicated at D D) slotted on their own front faces, as indicated at (1 and secured in these slots the butt-ends of curved springs E E, curving backward and downward, as shown, so that when the dust-guard is in normal po sition the outer ends E of the springs extend behind and press against the ears A A The dust-guard may be secured in place to receive the axle by first engaging the upper spring E E with the ear A while the dust-guard is turned to one side and then turning it downward until the lower spring E E engages the downwardly-extending car A, or the distance between the ends E of the springs may somewhat exceed the distance between the bottom of the upper ear A and the lowest point of the under ear A so that by first engaging the upper spring of the car A and moving it downward as far as it will go the lower spring will pass under the ear A when the box is moved up to approximately normal position, leaving both springs engaged with the ears.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-- An axle-box having an opening at its rear for the passage of the axle, said opening being surrounded by an outwardly-extending the axle and springs, as E E, extending from narrow plane-faced flange, as A 60*, and the the top and bottom of the guard-plate D Over IO top and bottom rear edges of the box being and against the ears A A formed with ear-like flanges A A in combination with a metal dust-guard, as D, having NATHAN DAVIS a plane face, as d adapted to rest against Witnesses: the plane face a of flange A and alsohaving CHAS. F. MYERS,

a circular passage d adapted to fitnicely on D. STEWART. 

